There are four main types of point of view used in texts: first person, second person, third person limited, and third person omniscient.
First Person: This point of view is the speaker's/narrator's point of view. He or she is telling his or her own story. This point of view uses the pronouns I, me, we, or us.
Second Person: This point of view is rarely used given it can tend to alienate the reader. Here, the narrator tells the reader's story (through the use of the pronoun you). In some circumstances, the story may be from the perspective of a female "you." Under these circumstances, male readers may have a hard time engaging with things when the narrator is telling of typically feminine behaviors/issues.
Third Person Limited: This point of view is used when the narrator is not in the story, telling the story of the protagonist, and has limited knowledge on all other characters. Some of the pronouns used in this type of narration are he/she, his/her, they and them.
Third Person Omniscient: This point of view is used when the narrator is telling the story of all characters in the story. This narrator is not part of the story and knows everything about all characters. Sometimes, a narrator can be both limited and omniscient at the same time (in regards to "knowledge" about about most, but not all, characters).
In regards to Ray Bradbury's novel Fahrenheit 451, the point of view is third person limited omniscient. In the opening of the novel, the following excerpt sets the point of view.
With the brass nozzle in his fists, with this great python spitting its venomous kerosene upon the world, the blood pounded in his head, and his hands were the hands of some amazing conductor playing all the symphonies of blazing and burning to bring down the tatters and charcoal ruins of history.
The use of the word "his" shows the third person narration (or point of view). For the most part, the story is told from Montag's point of view. There are other places in the novel where other characters' actions and thoughts are told, but they are limited. This makes the story's narrative point of view both limited and omniscient.